%0 Journal Article %J MEASUREMENT %D 2014 %T Improving sodium Magnetic Resonance in humans by design of a dedicated Na-23 surface coil %A G. Giovannetti %A Pingitore, A. %A V. Positano %A De Marchi, D. %A Valvano, G. %A Gibiino, F. %A Aquaro, G. D. %A Lombardi, M. %A L. Landini %A M. F. Santarelli %B MEASUREMENT %V 50 %8 04/2014 %G eng %& 285-292 %R 10.1016/j.measurement.2014.01.006 %0 Journal Article %J JACC-CARDIOVASCULAR IMAGING %D 2013 %T 3D CMR Mapping of Metabolism by Hyperpolarized 13C-Pyruvate in Ischemia-Reperfusion %A Aquaro, G. D. %A Frijia, F. %A V. Positano %A Menichetti, L. %A M. F. Santarelli %A Ardenkjaer-Larsen, J. H. %A Wiesinger, F. %A Lionetti, V. %A Romano, S. L. %A Bianchi, G. %A Neglia, D. %A G. Giovannetti %A Schulte, R. %A Recchia, f. A. %A L. Landini %A Lombardi, M. %B JACC-CARDIOVASCULAR IMAGING %V 6 %P 743-744 %G eng %N 6 %R 10.1016/j.jcmg.2012.11.023 %0 Journal Article %J EUROPEAN HEART JOURNAL %D 2013 %T An automatic method for myocardial T2(star) curve fitting in thalassemia patients with severe iron overload %A Meloni, A. %A V. Positano %A Gulino, L. %A L. Landini %A M. F. Santarelli %A Santamaria, V. %A Restaino, G. %A Renne, S. %A Lombardi, M. %A D. Pepe %B EUROPEAN HEART JOURNAL %V 34 %P 837-837 %G eng %N suppl. 1 %0 Journal Article %J CURRENT PHARMACEUTICAL DESIGN %D 2013 %T Cardiovascular Molecular Imaging: New Methodological Strategies %A M. F. Santarelli %A V. Positano %A Menichetti, L. %A L. Landini %B CURRENT PHARMACEUTICAL DESIGN %V 19 %P 2439-2446 %G eng %N 13 %0 Journal Article %J APPLIED MAGNETIC RESONANCE %D 2013 %T Computational Analysis of a Radiofrequency Knee Coil for Low-Field MRI Using FDTD %A V. Hartwig %A Tassano, S. %A Mattii, A. %A N. Vanello %A V. Positano %A M. F. Santarelli %A L. Landini %A G. Giovannetti %B APPLIED MAGNETIC RESONANCE %V 44 %P 389-400 %G eng %N 3 %R 10.1007/s00723-012-0388-8 %0 Journal Article %J CONCEPTS IN MAGNETIC RESONANCE PART B-MAGNETIC RESONANCE ENGINEERING %D 2013 %T Design of a quadrature surface coil for hyperpolarized 13C MRS cardiac metabolism studies in pigs %A G. Giovannetti %A Frijia, F. %A V. Hartwig %A Attanasio, S. %A Menichetti, L. %A N. Vanello %A V. Positano %A Ardenkjaer-Larsen, J. H. %A Lionetti, V. %A Aquaro, G. D. %A De Marchi, D. %A Schulte, R. %A Wiesinger, F. %A L. Landini %A Lombardi, M. %A M. F. Santarelli %B CONCEPTS IN MAGNETIC RESONANCE PART B-MAGNETIC RESONANCE ENGINEERING %V 43b %P 69 - 77 %G eng %N 2 %R 10.1002/cmr.b.21235 %0 Journal Article %J APPLIED MAGNETIC RESONANCE %D 2013 %T FDTD Analysis of a Radiofrequency Knee Coil for Low-Field MRI: Sample-Induced Resistance and Decoupling Evaluation %A Morelli, M. S. %A V. Hartwig %A Tassano, S. %A N. Vanello %A V. Positano %A M. F. Santarelli %A Carrozzi, A. %A L. Landini %A G. Giovannetti %B APPLIED MAGNETIC RESONANCE %V 44 %P 1393 - 1403 %G eng %N 12 %R 10.1007/s00723-013-0488-0 %0 Journal Article %J MEASUREMENT %D 2013 %T Magnetic resonance butterfly coils: Design and application for hyperpolarized C-13 studies %A G. Giovannetti %A Frijia, F. %A Attanasio, S. %A Menichetti, L. %A V. Hartwig %A N. Vanello %A Ardenkjaer-Larsen, J. H. %A De Marchi, D. %A V. Positano %A Schulte, R. %A L. Landini %A Lombardi, M. %A M. F. Santarelli %B MEASUREMENT %V 46 %P 3282-3290 %G eng %N 9 %R 10.1016/j.measurement.2013.06.031 %0 Journal Article %J NTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN BIOMEDICAL ENGINEERING %D 2013 %T Regularization techniques on least squares non-uniform fast Fourier transform %A Gibiino, F. %A V. Positano %A L. Landini %A M. F. Santarelli %B NTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN BIOMEDICAL ENGINEERING %V 29 %P 561-573 %G eng %N 5 %R 10.1002/cnm.2540 %0 Journal Article %J COMPUTERS IN BIOLOGY AND MEDICINE %D 2013 %T Structured errors in reconstruction methods for Non-Cartesian MR data %A Gibiino, F. %A V. Positano %A Wiesinger, F. %A G. Giovannetti %A L. Landini %A M. F. Santarelli %B COMPUTERS IN BIOLOGY AND MEDICINE %V 43 %P 2256-2262 %8 12/2013 %G eng %N 12 %R 10.1016/j.compbiomed.2013.10.013 %0 Journal Article %J APPLIED MAGNETIC RESONANCE %D 2013 %T Transmit-Only/Receive-Only Radiofrequency System for Hyperpolarized C-13 MRS Cardiac Metabolism Studies in Pigs %A G. Giovannetti %A Frijia, F. %A V. Hartwig %A Menichetti, L. %A V. Positano %A Ardenkjaer-Larsen, J. H. %A Lionetti, V. %A Aquaro, G. D. %A De Marchi, D. %A Schulte, R. %A Wiesinger, F. %A L. Landini %A Lombardi, M. %A M. F. Santarelli %B APPLIED MAGNETIC RESONANCE %V 44 %P 1125-1138 %G eng %N 10 %R 10.1007/s00723-013-0477-3 %0 Journal Article %J IEEE - ASME Transactions on Mechatronics %D 2008 %T Sensing Glove for Brain Studies: Design and assessment of its Compatibility for fMRI with a Robust Test %A N. Vanello %A V. Hartwig %A M. Tesconi %A E. Ricciardi %A A. Tognetti %A G. Zupone %A R. Gassert %A D. Chapuis %A N. Sgambelluri %A E. P. Scilingo %A G. Giovannetti %A V. Positano %A M. F. Santarelli %A A. Bicchi %A P. Pietrini %A D. De Rossi %A L. Landini %K Haptics %K Robotics %X

In this paper, we describe a biomimetic-fabric-based sensing glove that can be used tomonitor hand posture and gesture. Our device is made of a distributed sensor network of piezoresistive conductive elastomers integrated into an elastic fabric. This solution does not affect natural movement and hand gestures, and can be worn for a long time with no discomfort. The glove could be fruitfully employed in behavioral and functional studies with functional MRI (fMRI) during specific tactile or motor tasks. To assess MR compatibility of the system, a statistical test on phantoms is introduced. This test can also be used for testing the compatibility of mechatronic devices designed to produce different stimuli inside the MR environment. We propose a statistical test to evaluate changes in SNR and time-domain standard deviations between image sequences acquired under different experimental conditions. fMRI experiments on subjects wearing the glove are reported. The reproducibility of fMRIresults obtained with andwithout the glove was estimated. A good similarity between the activated regions was found in the two conditions.

%B IEEE - ASME Transactions on Mechatronics %V 13 %P 345-354 %G eng %0 Book Section %B Encyclopedia of Healthcare Information Systems %D 2007 %T Electrocutaneous stimulation of skin mechanoreceptors for tactile studies with functional Magnetic Resonance Imaging %A V. Hartwig %A C. Cappelli %A N. Vanello %A E. Ricciardi %A E. P. Scilingo %A G. Giovannetti %A M. F. Santarelli %A V. Positano %A A. Bicchi %A P. Pietrini %A L. Landini %K Haptics %B Encyclopedia of Healthcare Information Systems %I Medical Information Science %P 497 - 503 %G eng %0 Conference Paper %B Proc. 28th IEEE Engineering in Medicine and Biology Conference %D 2006 %T A Compatible Electrocutaneous Display for functional Magnetic Resonance Imaging application %A V. Hartwig %A C. Cappelli %A N. Vanello %A E. Ricciardi %A E. P. Scilingo %A G. Giovannetti %A M. F. Santarelli %A V. Positano %A L. Landini %A A. Bicchi %K Haptics %X In this paper we propose an MR (Magnetic Resonance) compatible electrocutaneous stimulator able to inject an electric current, variable in amplitude and frequency, into the fingertips in order to elicit tactile skin receptors (mechanoreceptors). The desired goal is to evoke specific tactile sensations selectively stimulating skin receptors by means of an electric current in place of mechanical stimuli. The field of application ranges from functional Magnetic Resonance Imaging (fMRI) tactile studies to augmented reality technology. The device here proposed is designed using safety criteria in order to comply with the threshold of voltage and current permitted by regulations. Moreover, MR safety and compatibility criteria were considered in order to perform experiments inside the MR scanner during an fMRI acquisition for functional brain activation analysis. Psychophysical laboratory tests are performed in order to define the different evoked tactile sensation. After verifying the device MR safety and compatibility on a phantom, a test on a human subject during fMRI acquisition is performed to visualize the brain areas activated by the simulated tactile sensation. %B Proc. 28th IEEE Engineering in Medicine and Biology Conference %P 100-102 %G eng %0 Conference Paper %B Proceedings of the EuroHaptics 2004 (Technische Universitat Munchen, Germany June 5-7, 2004) %D 2004 %T A compatibility test for tactile displays designed for fMRI studies. %A V. Hartwig %A N. Vanello %A R. Gassert %A D. Chapuis %A M. F. Santarelli %A V. Positano %A E. Ricciardi %A P. Pietrini %A L. Landini %A A. Bicchi %K Haptics %X

The purpose of this document is to provide a compatibility test for mechatronic devices to be used within a diagnostic MR environment. In order to design new devices that can produce tactile stimuli of different nature inside the MRI environment, compatibility tests with several materials and mechatronic devices are reported. Results of these experiments are analyzed in order to evaluate artefacts caused by the presence and actuation of the devices.

%B Proceedings of the EuroHaptics 2004 (Technische Universitat Munchen, Germany June 5-7, 2004) %P 456-458 %G eng %0 Conference Paper %B 10th Annual Meeting of the Organization for Human Brain Mapping %D 2004 %T Perception of Optic and Tactile Flow Both Activate V5/MT cortical complex in the human brain %A N. Vanello %A E. Ricciardi %A D. Dente %A N. Sgambelluri %A E. P. Scilingo %A C. Gentili %A L. Sani %A V. Positano %A M. F. Santarelli %A M. Guazzelli %A J. V. Haxby %A L. Landini %A A. Bicchi %A P. Pietrini %K Haptics %X

V5/MT complex responds selectively to perception of optic flow (Morrone et al., Nature Neurosci , 2001). Since similarities exist between visual and tactile perception, we hypothesized that tactile flow might also rely on V5/MT response. We and others have shown recently that visual extrastriate cortical areas respond both during visual and tactile recognition of objects, indicating that these regions are organized in a supramodal fashion. In this study, we measured neural response evoked during visual and tactile perception of coherently moving dot patterns to test the hypothesis that V5/MT may be supramodally organized and may respond also to tactile stimulation.

%B 10th Annual Meeting of the Organization for Human Brain Mapping %G eng %0 Conference Paper %B Proceedings of the EuroHaptics 2004 (Technische Universitat Munchen, Germany June 5-7, 2004) %D 2004 %T Perception of visual and tactile flow activates common cortical areas in the human brain. %A E. Ricciardi %A N. Vanello %A D. Dente %A N. Sgambelluri %A E. P. Scilingo %A C. Gentili %A L. Sani %A V. Positano %A M. F. Santarelli %A M. Guazzelli %A J. V. Haxby %A L. Landini %A A. Bicchi %A P. Pietrini %K Haptics %X

We report results of a pilot study using functional magnetic resonance imaging aimed at determining the neural correlates of tactile flow. We hypothesized that brain response to tactile flow would involve the same cortical areas (V5/MT) that respond to optic flow. Our results showed that V5/MT cortex indeed is activated by tactile flow perception. These findings are consistent with a supramodal organization of brain regions involved in optic and tactile flow processing.

%B Proceedings of the EuroHaptics 2004 (Technische Universitat Munchen, Germany June 5-7, 2004) %P 290-292 %G eng